POLEBRIDGE, MONTANA

Period of Record General Climate Summary - Heating Degree Days

Station:(246615) POLEBRIDGE
From Year=1933 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1478 1178 1100 779 534 318 163 196 441 768 1108 1383 9447
60 1323 1037 945 629 381 184 65 83 296 613 958 1228 7742
57 1230 952 852 539 292 116 31 41 216 521 868 1135 6794
55 1168 896 790 480 237 80 17 24 169 459 808 1073 6199
50 1013 755 635 333 118 20 2 3 78 309 658 918 4843
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu